US6705072B2 - Spinning device - Google Patents

Spinning device Download PDF

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Publication number
US6705072B2
US6705072B2 US10/022,806 US2280601A US6705072B2 US 6705072 B2 US6705072 B2 US 6705072B2 US 2280601 A US2280601 A US 2280601A US 6705072 B2 US6705072 B2 US 6705072B2
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United States
Prior art keywords
spindle
nozzle
fiber
channel
guide surface
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
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US10/022,806
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English (en)
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US20020150643A1 (en
Inventor
Peter Anderegg
Robert Wehrli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Assigned to MASCHINENFABRIK RIETER AG reassignment MASCHINENFABRIK RIETER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANDEREGG, PETER, WEHRLI, ROBERT
Publication of US20020150643A1 publication Critical patent/US20020150643A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means

Definitions

  • the invention relates to a spinning device for the production of a spun thread from a fiber bundle, comprising a nozzle block with a fiber conveying channel, with a fiber feed surface for guiding the fibres and with a nozzle part with one or more nozzles, which impose a rotating air flow onto the fiber bundle, and a rotating or stationary hollow spindle with an intake mouth to a yarn channel for taking up the fibres delivered from the fiber feed surface and for guiding the spun thread.
  • the fibres are either guided by a drafting device or a suction drum against the fibre conveying channel, and are guided in this channel into the intake mouth of a rotating or stationary hollow spindle.
  • the front ends of such fibres are guided in the fibre bundle and in the intake mouth or in the yarn channel respectively, while rear free ends are splayed and taken up by the rotating air flow, and are rotated around the front ends, already located in the intake mouth or in the yarn channel respectively, i.e. the bundled front ends, in order thereby to produce a yarn with real twist, similar to a ring-spun yarn.
  • front and “rear” ends of the fibres were selected in connection with the direction of conveying of the fibres.
  • the distance between the outlet of the fibre conveying channel and the intake mouth of the spindle is very small, for example one millimeter, with the result that the spinning process has a certain sensitivity to dirt particles, in particular to small fragments of shell particles.
  • the prior art in DE 4308392 A 1 (U.S. Pat. No. 5,419,110) provides for the spindle to be capable of being moved backwards from the spinning unit in an axial direction sufficiently far for a suction element located in between to be able to suck the yarn end through the spindle and bring it against the spinning unit.
  • the spooling unit is designed as far as possible in such a way that it can be served from the same side of the machine. If, as mentioned earlier, the elements of the whole unit now need to be guided apart from one another in the direction of spinning in order to, for example, introduce assistance media between them or for spinning start-up (also called piecing), then this necessity to move them apart leads to an inconveniently long, i.e. high, arrangement which is not favourable for the operating personnel.
  • Objects of the invention are solved in that at least the fibre conveying channel is capable of being divided and opened in such a way that the fibre guide surface is exposed and accessible.
  • the nozzle section is also capable of being divided and opened in such a way that is exposed and accessible. It is further of advantage for the spindle to be designed as capable of being divided accordingly in such a way that the yarn channel is exposed and accessible.
  • the advantage of the invention lies in the fact that all three of the elements mentioned can be opened in a direction perpendicular to the direction of spinning, without the axial dismantling of the entire spinning unit, with the result that accessibility is optimally provided to the critical point between the intake mouth of the spindle and the outlet point of the yarn guide channel.
  • FIG. 1 A longitudinal section through a drafting device and through a spinning unit, represented in part in a semi-diagrammatic manner
  • FIG. 2 A view along the section line I—I
  • FIG. 3 A longitudinal section through a variant of the spinning device from FIG. 1
  • FIG. 4 A detail section from FIG. 3
  • FIG. 5 A longitudinal section through a further variant of the spinning device from FIG. 1
  • FIG. 6 A longitudinal section through a variant of the spinning device from FIG. 3 according to the sectional line V—V from FIG. 7
  • FIG. 7 A cross-section through FIG. 6 along the sectional lines III—III
  • FIG. 8 A cross-section through FIG. 6 along the sectional lines IV—IV
  • FIG. 9 A partial enlargement of FIG. 8
  • FIG. 7.1 A variant of the device from FIG. 7
  • FIG. 8.1 A variant of the device from FIG. 8
  • FIG. 1 shows a drafting device 1 with intake rollers 21 , and middle rollers 20 with belts 20 . 1 , which convey fibers against a pair of delivery rollers 2 , which in turn convey the fibres further into a fibre conveying channel 16 .
  • the delivery rollers 2 consist in turn of an upper delivery roller 18 and a lower delivery roller 19 .
  • the fibre-processing spinning unit (S) comprises, following the delivery rollers 2 , a fibre conveying part 3 , consisting of an upper fibre conveying part 4 and a lower fibre conveying part 5 . These are followed by a nozzle part 6 with blower nozzles 17 , which are arranged in an inherently known manner in such a way that, on the one hand, as a result of an injector effect, air is sucked in through the fibre conveying channel 16 and, on the other, in an inherently known manner, this air, as a turbulent flow, takes up free ends (for reference “rear ends”) of the fibres delivered, and winds them around the front ends already located in the mouth section 26 of a yarn guide channel 12 , i.e. already bound ends, and thus rotate them to form a yarn.
  • a fibre conveying part 3 consisting of an upper fibre conveying part 4 and a lower fibre conveying part 5 .
  • blower nozzles 17 blower nozzles 17 , which are arranged in an inherently known manner in such
  • a needle-like element extends in this situation at or even into the mouth section 26 , as a result of which a relatively narrow passage space pertains for the fibres passing into the mouth 26 , which may possibly lead to problems if dirt particles, such as fragments of cotton seeds, become jammed in between them, with the result that an immediate interruption occurs in spinning and yarn production.
  • the spindle 25 must be drawn back in the axial direction in order to clean the space between the mouth 26 and the needle 23 , and, as mentioned heretofore, a suction element must also be located at the mouth 26 in order to take the yarn end back again so as to bring it to or through the fibre guide channel 16 .
  • At least the fibre conveying part 3 is designed to be capable of being divided, in that the upper fibre conveying part 4 , together with a channel part 22 pertaining to it, can be raised in the direction of the arrow C or pivoted away, so that the fibre conveying channel 16 is free and the area in front of the mouth 26 is accessible. In this situation, the lower fibre conveying part 5 , together with the needle part 24 , remains stationary.
  • the nozzle part 6 As a variant there is also the possibility of the nozzle part 6 , with everything surrounded by the broken line and united in the arrow B, i.e. also including the nozzles 17 , being raised or pivoted away, in order thereby to create more free space for cleaning. In this situation, the lower nozzle part 8 , and the nozzle 17 shown in it, remain stationary.
  • a further variant consists of the yarn guide part 9 , together with an upper part 13 of the spindle 12 and an upper yarn guide part 10 , being raised or pivoted in the direction of the arrow A, after the nozzle part G has been raised or pivoted in the direction B, so that the yarn guide channel 12 is also exposed for cleaning.
  • a lower yarn guide part 11 together with a lower part 14 of the spindle 25 remains stationary.
  • the advantage of opening the three elements referred to heretofore not only provides the advantage of cleaning, but also the advantage of simple recovery of a yarn end, which in turn is to be laid in the lower part 14 and in the open fibre conveying channel 16 , in order for this end to be brought even by hand between the entrance to the fibre delivery channel 16 and the delivery rollers 2 .
  • a further possibility consists of the upper delivery roller 18 being raised or pivoted in the direction of the arrow C. 1 , in order for the foresaid yarn end to be brought still further beneath the upper delivery roller, in order thereby to unit this yarn end, as shown, with the newly delivered fibers in front of the pair of delivery rollers 2 .
  • FIG. 2 is therefore not shown as a section, but as a separated element, since this involves an element which is capable of being separated from the nozzle part 6 .
  • FIG. 3 shows, as mentioned, a variant of the device from FIG. 1, in which, instead of a pair of delivery rollers 2 , the upper delivery roller 18 interacts with a suction roller 27 , with a suction air connection in order to draw fibres out from the pair of belts, at the clamping point between these two rollers, and delivering them against the fibre conveying channel 16 in the area 30 of the suction segment 28 on the suction roller by means of the rotation of the suction roller and the suction effect, and, by means of the blowing air 31 , thereafter blowing them into the fibre conveying channel 16 at the suction area 30 , and in this way supporting the conveying air referred to heretofore, created by the injection effect of the nozzles 17 .
  • FIG. 5 shows the same elements, encompassed by the letters A and B, while the section C of FIG. 1 features in FIG. 5 a variant, inasmuch as, instead of the lower delivery roller, a suction roller 27 is provided for, which interacts with the upper delivery roller 18 and forms a clamping gap. After this clamping gap, the fibres on the suction roller 27 are retained on the surface of the roller in the suction area 30 , and at the end of this suction area 30 are blown by means of a blown air flow 31 against the fibre conveying channel 16 , in which the air flow referred to takes up the fibres 34 and conveys them through the fibre conveying channel 16 .
  • a contact pressure roller 35 is mounted so as to exert spring pressure by means of contact pressure springs 36 , so that the fibres on the surface of the suction roller are pressed with the force of the springs, in order thereby to achieve a more stable fiber delivery into the fiber conveying channel 16 than without this contact pressure roller 35 .
  • the contact pressure roller 35 is, as mentioned, spring-mounted in a roller bearing part 37 , whereby the roller bearing part 37 is permanently connected to a channel part 22 .
  • the elements in Group E can be raised or pivoted upwards, in order to expose the fiber conveying channel 16 , in order, for example, to transfer a yarn end coming from the spindle 12 to the suction roller 27 .
  • FIGS. 6 and 7 show in principle the same elements as those submitted in the application by the present assignee, applied for in Switzerland on Sep. 22, 2000 under No. 2000/1845/00.
  • the identification reference numbers no longer correspond with the same reference numbers as in the foresaid application.
  • certain elements have been modified in order to allow for the opening of the fibre conveying channel 16 and the spindle 25 .
  • FIG. 6 accordingly shows a nozzle part 6 with an upper nozzle part 7 , a lower nozzle part 8 , in each of which blower nozzles 17 are provided.
  • blower nozzles 17 of which a further two may be provided for, on the one hand a turbulent air flow is created, as already described in the foresaid application, by means of which free rear fiber ends are wound about front fiber ends, in order thereby to create a yarn which is drawn through the yarn guide channel 12 by drawing rollers, not shown here.
  • the fibres which are brought onto a fiber guide surface 41 from the left, seen looking at the figure, by means of a suction air flow created by the injector effect of the nozzles 17 , are brought onto the fiber guide surface 41 against an intake mouth 26 of the spindle 25 , in order, as mentioned heretofore, to create the yarn.
  • the possibility pertains of raising the upper nozzle part 7 in the direction of the arrow F or pivoting it in a plane lying perpendicular to the middle 15 of the yarn guide channel. This allows the fiber guide surface 41 to be freely accessible.
  • the possibility likewise also pertains of raising or pivoting upwards an upper part 13 of the spindle 25 in the direction of the arrow G, whereby the upper part 13 is connected to an upper yarn guide part 10 , to which the device, not shown, is secured.
  • the device required for raising in the direction F is not shown and is not the object of the invention.
  • a lower part 14 of the spindle 25 is in turn connected to a lower yarn guide part 11 , which remains stationary.
  • the separation of the upper part 13 and the lower part 14 is effected at the separation surface 15 of the spindle 25 .
  • the lower nozzle part 8 is securely connected to a carrier part 42 , likewise stationary, so that the fiber guide surface 41 is likewise stationary.
  • FIG. 6.1 shows that the spindle 25 is provided in the area of the intake mouth 26 with a wear-resistant ring 22 .
  • this ring 22 is connected to the stationery part 14 or the movable part 13 , because the spindle 25 is open, as described in FIGS. 8 and 9, with the result that sufficient clearance nevertheless still pertains for the cleaning referred to, or for the start or restart of spinning respectively.
  • this ring being likewise divided, according to FIG. 9, into an upper part connected to the upper part 13 , and a lower part connected to the lower part 14 .
  • the separation channels 39 can each be provided with a ring half, with the same advantage as described for FIG. 9 .
  • FIG. 7 shows a cross-section according to the sectional lines III—III (FIG. 6 ), in which a separation surface 48 is shown, from which the upper nozzle part is raised in the direction F or F. 1 .
  • Channels 40 are also recessed, so as to avoid jamming of peripheral fibres at the separation surface.
  • FIG. 8 shows a section through the spindle 25 , according to the sectional lines IV—IV with the separation surface 15 , which coincides with the mid-line of the spindle.
  • the other identification reference numbers accord with the identification reference numbers in FIG. 6 and have the same function as in FIG. 6 .
  • FIG. 9 shows an enlargement of the yarn guide channel 12 with the separation channel 15 , whereby separation channels 39 are additionally provided for, in order, by analogy with the separation channels 40 , to avoid the jamming of peripheral fibres in the clamping surface 15 .
  • FIG. 7.1 shows a variant of FIG. 7, in the event of the fiber conveying channel not being separable by means of a flat separation surface 38 (FIG. 7 ), but by means of a channel-shaped lower nozzle part 8 . 1 and a matching segment-shaped upper nozzle part 7 . 1 .
  • This type of separation of the two parts provides the advantage that the separation channels 40 , such as are shown in FIG. 7, can be done away with, because the separation of the segment-shaped upper nozzle part 7 . 1 is located substantially higher than the separation surface 38 in FIG. 7 . As a result of this, there is even less risk of fibers being trapped in the separation area than with the separation channels 40 of FIG. 7 .
  • the separation surface is not a plane like the separation surface 15 of FIG. 8, but is likewise provided as channel-shaped, in that the upper part 13 . 1 is provided as segment-shaped and matches accordingly with the channel-shaped lower part 14 . 1 in the sense of a sealing surface.
  • segment-shaped upper part 13 . 1 is raised in the same manner as the upper part 13 in FIG. 8 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US10/022,806 2000-12-22 2001-12-18 Spinning device Expired - Fee Related US6705072B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH25152000 2000-12-22
CH2515/00 2000-12-22

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US6705072B2 true US6705072B2 (en) 2004-03-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013029123A1 (fr) * 2011-09-03 2013-03-07 "D-A-Dinko Bahov" Et Procédé et dispositif d'obtention d'un fil de fibres coupées au moyen d'un processus unique de peignage, d'étirement et de torsion
US20160032498A1 (en) * 2014-07-30 2016-02-04 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and the Operation of such a Machine

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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US6531114B1 (en) 1999-04-06 2003-03-11 Wm. Wrigley Jr. Company Sildenafil citrate chewing gum formulations and methods of using the same
US6355265B1 (en) 1999-04-06 2002-03-12 Wm. Wrigley Jr. Company Over-coated chewing gum formulations
DE10256344A1 (de) * 2002-11-22 2004-06-03 Wilhelm Stahlecker Gmbh Luftdüsenspinnvorrichtung
CN1878895B (zh) * 2003-11-11 2010-09-01 里特机械公司 具有纤维引导元件的纺纱部位
DE102004044345A1 (de) * 2004-09-09 2006-03-16 Wilhelm Stahlecker Gmbh Luftdüsenspinnvorrichtung
DE102004047580A1 (de) * 2004-09-22 2006-04-06 Wilhelm Stahlecker Gmbh Einrichtung zum Unterstützen eines Anspinnvorganges an einer Lüftdüsenspinnvorrichtung
DE102006018249A1 (de) * 2006-04-13 2007-10-18 Wilhelm Stahlecker Gmbh Spindelförmiges Bauteil für eine Luftdüsenspinnvorrichtung mit einem Injektionskanal
DE102015100825A1 (de) * 2015-01-21 2016-07-21 Maschinenfabrik Rieter Ag Spinndüse einer Luftspinnmaschine sowie Verfahren zum Öffnen derselben
CN105063820A (zh) * 2015-09-25 2015-11-18 杨田花 由升降电机驱动升降且带过滤网的纺织用气流搓捻装置
CN106066176A (zh) * 2016-06-15 2016-11-02 高武保 一种七轴联动光纤缠绕机机械结构
CN105951225B (zh) * 2016-06-22 2018-01-16 陕西宝成航空仪表有限责任公司 用于全自动智能纺纱机喷嘴的自动清洁系统
DE102019103271A1 (de) * 2019-02-11 2020-08-13 Maschinenfabrik Rieter Ag Spinndüse für eine Luftspinnmaschine sowie Verfahren zum Öffnen einer solchen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796340A (en) * 1985-10-19 1989-01-10 Barmag Ag Method of threading a yarn processing nozzle
US5193335A (en) 1990-07-04 1993-03-16 Murata Kikai Kabushiki Kaisha Spinning apparatus
US5528895A (en) * 1993-09-08 1996-06-25 Murata Kikai Kabushiki Kaisha Spinning apparatus with twisting guide surface
US5704204A (en) * 1995-02-10 1998-01-06 Murata Kikai Kabushiki Kaisha Method and apparatus for piecing yarn slivers to a parent yarn in a yarn spinning machine
US6314714B1 (en) * 1999-06-18 2001-11-13 W. Schlafhorst Ag & Co. Device for producing spun yarn
US20020124543A1 (en) * 2000-12-22 2002-09-12 Maschinenfabrik Rieter Ag Apparatus for producing a core spun yarn

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07122167B2 (ja) * 1992-03-16 1995-12-25 村田機械株式会社 紡績装置の糸継ぎ方法
JP2616428B2 (ja) * 1994-01-25 1997-06-04 村田機械株式会社 紡績機の糸継ぎ方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796340A (en) * 1985-10-19 1989-01-10 Barmag Ag Method of threading a yarn processing nozzle
US5193335A (en) 1990-07-04 1993-03-16 Murata Kikai Kabushiki Kaisha Spinning apparatus
US5528895A (en) * 1993-09-08 1996-06-25 Murata Kikai Kabushiki Kaisha Spinning apparatus with twisting guide surface
US5704204A (en) * 1995-02-10 1998-01-06 Murata Kikai Kabushiki Kaisha Method and apparatus for piecing yarn slivers to a parent yarn in a yarn spinning machine
US6314714B1 (en) * 1999-06-18 2001-11-13 W. Schlafhorst Ag & Co. Device for producing spun yarn
US20020124543A1 (en) * 2000-12-22 2002-09-12 Maschinenfabrik Rieter Ag Apparatus for producing a core spun yarn

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013029123A1 (fr) * 2011-09-03 2013-03-07 "D-A-Dinko Bahov" Et Procédé et dispositif d'obtention d'un fil de fibres coupées au moyen d'un processus unique de peignage, d'étirement et de torsion
US20160032498A1 (en) * 2014-07-30 2016-02-04 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and the Operation of such a Machine
US9719192B2 (en) * 2014-07-30 2017-08-01 Maschinenfabrik Rieter Ag Spinning unit of an air jet spinning machine and the operation of such a machine

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US20020150643A1 (en) 2002-10-17
EP1217109A3 (fr) 2003-04-02
EP1217109A2 (fr) 2002-06-26
JP2002235250A (ja) 2002-08-23

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